DZL9-100 RCCB is in conformity with the standard of IEC61008&period; The RCCB can cut off the faultcircuit immediately on the occasion of shock hazard or earth leakage of trunk&period; Thus&comma; it is suitable toavoid the shock hazard and fire caused by earth leakage&period; The RCCB is mainly suitable for use in varieties of plants and enterprises&comma; building construction 1phase 230V and 3 phase 400V 50&sol;60Hz&period; RCCB is not suitable for use on DC pulse system&period;